Drier.



F. G. SARGENT.

DRIER. APPLICATION FILED IIEc.2o, Isl?.

I 1,279,165. Patentedsept. 17, 19181.

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FREDERICK G. SARGENT, OF WESTFORD, MASSACHUSETTS, ASSIGNOR T0 C. G. SAR- GENTS SONS CORPORATION, 0F GRANITEVILLE, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS.

DRIER.

Specication of Letters Patent.

Patented Sept. 17, 1918.

Original applications led October 27, 1916, Serial No. 128,142, and '.T une 4, 1917, Serial No. 172,583. Divided Y and this application filed December 20,

To all whom t may concern.'

Be it know that I, FREDERICK G. SAR- GENT, a citizen of the United States, residing at Westford, in the county of Middlesex and State of Massachusetts, have invented a new and useful Drier, of which the following is a specification.

This is a division of my applications Serial No. 128,142,1iled October 27,1916, and 172,583, led June 4', 1917.

The principal objects of the invention are to provide an improved drier of the 4conveyer type with an improved air circulation system involving a by-pass for permitting part of the air to pass around the conveyer at the side, and improvements in the constructionby which the air that is brought in for drying purposes will ordinarilyy pass through a plurality of layers of fibrous ma terial, but, in case any one of these layers becomes too thoroughly matted to allow the air to pass through, the by-pass will permit the air to go through the rest of its course and have its full force and effect on the fibrous material on any other conveyers or strands. This is important because these conditions exist usually for only short periods on account of the reciprocation of the conveyers, and yet if these by-passes are not provided the whole system would be choked up during such periods and the eiiciency of the machine very greatly lessened instead of only being slightly lessened as by this arrangement. Further objects and advantages of the invention will appear hereinafter.

Reference is to be had to iny drawings, in which- Figure lis a side elevation of a drier constructed in accordance withthis invention; and

Fig. 2 is a transverse sectional view on the line 2-2 of Fig. 1.

The invention is shown as applied to a drier 10 having the usual blowers 11 and provided with slatted stock supports mounted on fixed transverse supporting members; This is shown in this case as horizontal. The driving mechanism need not be described in detail.

From the blowers the air circulates in the direction of the arrows shown in- Fi 2. The current is sometimes strong enoug to hold the Weel down on the support and pre.

the accompanyshaped to fit the rails.

1917. Serial No. 208,169.

vent its being fed along properly and also to prevent its being exposed to the air throughout the mass of fiber.

In the form shown the drying air passes from the fans l1 inwardly, under the bottom conveyer 18 and'then up through the other conveyers 17 and 14 and out at the side as shown by the arrows in; Fig. 2. Sometimes it happens, however, thattemporarily fibrous material on one of the conveyers is matted so closely that Vvery little air can go through it. In that casewith the ordinary constructions the drying action would be temporarily interrupted for all of the conveyers. In order to avoid this the following construction is provided. Brackets are arranged to support longitudinal rails 51 Vpreferably formed of rolled shapes as for example, Vs, these rails being stationary. On these rails are supported loose wheels 52 Above the wheels are arranged longitudinal rails 53 of the same shape as the rails 51 but inverted and resting on the wheels. These rails 58 are provided with longitudinal bars 54 which support cross bars 55 on which pins 56 are mounted that serve to reciprocate the stock. These pins move between stationary perforated slats 57 formed of sheet metal bent over at its edges to give it a dove-tail shape and fitting on similarly shaped projections 58 cutting out openings in the upper edges of the vertical flanges formed by stationary transverse irons 59. These are Ysupported on the brackets 50. At points just inside the rolls are arranged vertical partitions 60. These are spaced from the side walls of the casing and from the brackets above. They serve as wool guides and also to provide bypasses behind them that permit air to circulate around, under, behind and over them in the direction of the short arrows `shown in Fig. 2 at the sides of the compartments.

On account of this construction the air ordinarily would pass through in the way that has been described, but if the wool gets matted on one of the conveyers, as for example, the conveyer 17, the air willpass around that conveyer and will have its fullV force and effect on the material on the conveyers 18 and 14. In this way two-thirds of the loss due to this cause is avoided. The features of the invention are not limited to the reciprocating type of conveyer.

This invention although capa-ble of general use is especially adapted for long ber stock such as Southern palnietto reeds. It will be understood that the air can .be-caused to circulateV in exactly the Opposite Way to that shown if desired. Also the by-passes can be closed alternately on the two sides to provide a: longer course for thea-ir. For

example, the upper by-passes on the left and the middle lone on closed.

Although have illustrated and described only one :form ofk the inventionV I ain aware ofthe-facti that modiications can be made therein by any person skilled inthe art Without departing from the scopeof the invention vas expressedin the claims. There-l fore I do not Wish to be limited' to 'all' the details of 'construction' herein* shown andjdescribed, but What do claim is Y "1; In a drier, the. combination with the drier casing, of'a plurality of reciprocating conveyers therein, one over another, ,means at the' side* of, the casing'or supporting the conveyers, and vert'cal vpartitionsg.extending upwardly aty the Sides fof, the conveyers for the stock an'dto `form a byg-p'ass for air,

the right can beV spaces being provided Aboth Yunderand over said part1t1ons.

2. Ina. drier, the combination-cfarecipi;

rocatingT conveyer,y a stationary.` partition at each side of the conveyer to @constitute a guide for the stock, said partitions being spaced from the sides of the casing, each vpartition being spaced from the4 parts `above '3. In' ajdrier, the combination 01 a recip- Y rocating, conveyer, a stationary partition at the'side of theconveyer; to constitute Lt/guide i oiithe stock, sardipartitionbeing spaced from" the side` of the casingand. from .the parts above 1t to afordanlsair' circulation, and meansfor c1rculating.V the .air reely up through the conveyer "rolnj below whereby s .is

if the `conveyerfis clogged the air' will pass byitatlthe side.V

'ln .testimony whereoff "I have' hereunto Y aiiiz'ied my signature. y Y y yFia-EDlf'RIoK e. SARGrimani. 

